mesa: remove logf macro

Reviewed-by: Matt Turner <mattst88@gmail.com>

src/mesa/main/imports.h

@@ -100,7 +100,6 @@ typedef union { GLfloat f; GLint i; GLuint u; } fi_type;
 #define ceilf(f) ((float) ceil(f))
 #define expf(f) ((float) exp(f))
 #define floorf(f) ((float) floor(f))
-#define logf(f) ((float) log(f))
 
 #define sqrtf(f) ((float) sqrt(f))
 #endif

src/mesa/swrast/s_aaline.c

@@ -23,6 +23,7 @@
  */
 
 
+#include "c99_math.h"
 #include "main/glheader.h"
 #include "main/imports.h"
 #include "main/macros.h"